Effect of the olive fruit size on the parasitism rates of Bactocera oleae (Diptera: Tephritidae) by the figitid wasp Aganaspis daci (Hymenoptera: Figitidae), and first field releases of adult parasitoids in olive grove

2020 ◽  
Vol 13 (2) ◽  
pp. 66-77
Author(s):  
C.A. Moraiti ◽  
G.A. Kyritsis ◽  
N.T. Papadopoulos
Keyword(s):  
Biological Control Agent ◽  
Fruit Size ◽  
Fruit Fly ◽  
Field Trials ◽  
Control Agent ◽  
Olive Fruit Fly ◽  
Olive Grove ◽  
Olive Fruit ◽  
Parasitism Rates ◽  
Major Pest

SummaryThe olive fruit fly Bactrocera oleae (Rossi) (Diptera: Tephritidae) is the major pest of olives worldwide. The figitid wasp, Aganaspis daci (Hymenoptera: Figitidae), is a larval-prepupal endoparasitoid of fruit fly species, and it was found to successfully parasitize medfly larvae in field-infested figs in Greece. To assess the potential of A. daci as a biological control agent against B. oleae, we studied the effect of olive fruit size on parasitism rates of A. daci on 2nd and 3rd instar larvae of B. oleae, by using fruit of different size (cultivar ‘Chalkidikis’) and wild olive fruit. In addition, we conducted releases of A. daci females in a pilot olive grove in Volos, Magnesia. From July to October, we released 200 A. daci females/0.1 ha/week, followed by olive fruit sampling to estimate olive fruit infestation levels and the parasitism rates of A. daci. Laboratory trials revealed that fruit size and larvae instar were predictors of parasitism success of A. daci, with parasitism rates higher for small-size fruit of the cultivar “Chalkidikis” and the 3rd instar larvae of B. oleae. In field trials, no A. daci adults emerged from the olive fly infested fruit.

Psyttalia lounsburyi (Hymenoptera: Braconidae), potential biological control agent for the olive fruit fly in California

2008 ◽  
Vol 44 (1) ◽  
pp. 79-89 ◽  
Author(s):  
Kent M. Daane ◽  
Karen R. Sime ◽  
Xin-geng Wang ◽  
Hannah Nadel ◽  
Marshall W. Johnson ◽  
...  
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Fruit Fly ◽  
Control Agent ◽  
Olive Fruit Fly ◽  
Olive Fruit

Psyttalia ponerophaga (Hymenoptera: Braconidae) as a potential biological control agent of olive fruit fly Bactrocera oleae (Diptera: Tephritidae) in California

2007 ◽  
Vol 97 (3) ◽  
pp. 233-242 ◽  
Author(s):  
K.R. Sime ◽  
K.M. Daane ◽  
A. Kirk ◽  
J.W. Andrews ◽  
M.W. Johnson ◽  
...  
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Fruit Size ◽  
Positive Function ◽  
Fruit Fly ◽  
Control Programme ◽  
Bactrocera Oleae ◽  
Adult Longevity ◽  
Olive Fruit Fly ◽  
Olive Fruit

AbstractThe olive fruit fly, Bactrocera oleae (Rossi), is a newly invasive, significant threat to California's olive industry. As part of a classical biological control programme, Psyttalia ponerophaga (Silvestri) was imported to California from Pakistan and evaluated in quarantine. Biological parameters that would improve rearing and field-release protocols and permit comparisons to other olive fruit fly biological control agents were measured. Potential barriers to the successful establishment of P. ponerophaga, including the geographic origins of parasitoid and pest populations and constraints imposed by fruit size, were also evaluated as part of this investigation. Under insectary conditions, all larval stages except neonates were acceptable hosts. Provided a choice of host ages, the parasitoids' host-searching and oviposition preferences were a positive function of host age, with most offspring reared from hosts attacked as third instars. Immature developmental time was a negative function of tested temperatures, ranging from 25.5 to 12.4 days at 22 and 30°C, respectively. Evaluation of adult longevity, at constant temperatures ranging from 15 to 34°C, showed that P. ponerophaga had a broad tolerance of temperature, living from 3 to 34 days at 34 and 15°C, respectively. Lifetime fecundity was 18.7±2.8 adult offspring per female, with most eggs deposited within 12 days after adult eclosion. Olive size affected parasitoid performance, with lower parasitism levels on hosts feeding in larger olives. The implications of these findings are discussed with respect to field manipulation and selection of parasitoid species for olive fruit fly biological control in California and worldwide.

Evaluation ofFopius arisanusas a biological control agent for the olive fruit fly in California

2008 ◽  
Vol 10 (4) ◽  
pp. 423-431 ◽  
Author(s):  
K. R. Sime ◽  
K. M. Daane ◽  
X. G. Wang ◽  
M. W. Johnson ◽  
R. H. Messing
Keyword(s):  
Biological Control ◽  
Biological Control Agent ◽  
Fruit Fly ◽  
Control Agent ◽  
Olive Fruit Fly ◽  
Olive Fruit

scholarly journals Olive Landscape Affects Bactrocera Oleae Abundance, Movement and Damage

2021 ◽  
Author(s):  
Marta Quero Ortega ◽  
Natalia Moreno ◽  
Cristina E. Fernández ◽  
Susana Pascual
Keyword(s):  
Landscape Structure ◽  
Fruit Fly ◽  
Bactrocera Oleae ◽  
Olive Fruit Fly ◽  
Olive Grove ◽  
Olive Fruit ◽  
Distance Analysis ◽  
Cost Distance ◽  
Olive Groves ◽  
The Relationship

Abstract The olive fruit fly, Bactrocera oleae (Rossi) (Diptera: Tephritidae), is a key pest of olive groves. Because of its economic importance and problems associated with chemical control, new approaches to reduce the damage caused by this pest and a deeper knowledge of the biology of the insect and the relationship of landscape structure to different biological parameters are needed. B. oleae can fly long distances and its ability to move within the landscape can determine the damage caused to olive groves. This work evaluates the effect of landscape structure on olive fruit fly abundance, movements and damage at three times of year—spring, early autumn and late autumn—in central Spain. This area is less dominated by olive groves than southern Spain, where the relationship between olive grove area and B. oleae abundance is already known. A cost-distance analysis is used to evaluate the landscape effect on the movement of the fly along the crop cycle. The olive grove area is the landscape composition factor with the greatest effect on the parameters studied, with a decrease in B. oleae abundance in a more complex landscape during spring and early autumn. The cost-distance analysis shows that the olive fruit fly moves mainly in spring, and amongst olive groves. There is no evidence that land uses other than olive groves serve as a summer refuge for B.oleae in the studied landscape context. Olive grove area and land use diversity index had significant effects on olive damage in more than one year.

Larger olive fruit size reduces the efficiency of Psyttalia concolor, as a parasitoid of the olive fruit fly

2009 ◽  
Vol 49 (1) ◽  
pp. 45-51 ◽  
Author(s):  
Xin-Geng Wang ◽  
Marshall W. Johnson ◽  
Kent M. Daane ◽  
Victoria Y. Yokoyama
Keyword(s):  
Fruit Size ◽  
Fruit Fly ◽  
Olive Fruit Fly ◽  
Olive Fruit ◽  
Psyttalia Concolor

scholarly journals Status, Distribution and Parasitism Rate of Olive Fruit Fly (Bactrocera oleae.Rossi) Natural Enemies in Lebanon

2018 ◽  
Vol 5 (4) ◽  
pp. 246
Author(s):  
Abdel Kader El-hajj ◽  
Nabil Nemer ◽  
Samer Hajj Chhadeh ◽  
Faten Dandashi ◽  
Hiyam Yosef ◽  
...  
Keyword(s):  
Natural Enemies ◽  
Average Rate ◽  
Olive Tree ◽  
Fruit Fly ◽  
Olive Fruit Fly ◽  
Parasitism Rate ◽  
Olive Fruit ◽  
The North ◽  
Parasitism Rates ◽  
Fruit Samples

Olive tree is considered one of the most important cultivated crops in Lebanon. The cultivated area is mainly concentrated in the north and south Lebanon. Among the obstacles affecting olive cultivation is the olive fruit fly infestation which negatively alters the quality of olive oil. Olive fruit fly (Bactrocera oleae) is mainly controlled by chemical means. At the present time, no biological program against this pest is considered in Lebanon. The aim of this study is to investigate the status of olive fruit fly parasites in Lebanon. The study was conducted for one year in 28 orchards located in five regions of olive production. Fruit samples were collected weekly from June to October. A total of 23096 fruits was collected from all orchards. Eight parasites were detected. Eupelmus urozonous and Opius concolor were the most abundant parasites in most orchards, the others were restricted to specific locations. The only exception was observed at Abdeh site where most of the parasites were isolated. Parasitism rates ranged from 2.4 to 42.1 % and the average rate of all locations was 13.3%. The low parasitism rate recorded in this study is insufficient to control olive fruit fly. Introduction and rearing of natural enemies along with other management tactics may enhance the control of olive fruit fly infestation

Relative Densities of the Parasitoids and Predators Associated with the Olive Fruit Fly Bactrocera oleae (Gmelin) at Khan-Aranaba, El Qunitera, Syria

2016 ◽  
Vol 34 (3) ◽  
pp. 180-186
Author(s):  
A. N. Bashir ◽  
◽  
L. Aslan ◽  
F. Abdel-Razzak ◽  
◽  
...  
Keyword(s):  
Fruit Fly ◽  
Bactrocera Oleae ◽  
Olive Fruit Fly ◽  
Olive Fruit
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